fmbalsharaf2028
fmbalsharaf2028 fmbalsharaf2028
  • 12-10-2021
  • Mathematics
contestada

Stoplight A changes color every 42 seconds and Stoplight B changes color every 30 seconds. Both stoplights changed color 10 seconds ago. After how many seconds will the stoplights change color at the same time again *
200
190
210
180

Respuesta :

Aaronscience101
Aaronscience101 Aaronscience101
  • 12-10-2021

Answer:

210

Step-by-step explanation:

LCM of 42sec and 30 sec=210 sec

Answer Link

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